I was staying at Yazmin's place for two months. The place is located about 10 minutes walk from Phra Khanong and Onnut BTS stations (just between the two stations). Nearby there are food stalls, convenience stores and restaurants.
The apartment was spotlessly clean, and very functional, with everything you need - washing machine, iron, kitchenware and extra bed sheets. The (new) condominium complex includes a swimming pool and a gym.
Yazmin is very nice and responsive.
Overall highly recommended!